CVE-2022-49192

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  2. Vulnerabilities (CVE)
  3. CVE-2022-49192

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool cpsw_ethtool_begin directly returns the result of pm_runtime_get_sync when successful. pm_runtime_get_sync returns -error code on failure and 0 on successful resume but also 1 when the device is already active. So the common case for cpsw_ethtool_begin is to return 1. That leads to inconsistent calls to pm_runtime_put in the call-chain so that pm_runtime_put is called one too many times and as result leaving the cpsw dev behind suspended. The suspended cpsw dev leads to an access violation later on by different parts of the cpsw driver. Fix this by calling the return-friendly pm_runtime_resume_and_get function.

References
Link Resource
https://git.kernel.org/stable/c/2844e2434385819f674d1fb4130c308c50ba681e Patch
https://git.kernel.org/stable/c/30ad11bff021a94aff6dab1ec9236fdfd884fbff Patch
https://git.kernel.org/stable/c/459080fab12b23c0526026e5cedbf3fabb5457cc Patch
https://git.kernel.org/stable/c/585dc196a08fccdcd1b7fcf473cf566b34c4b840 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

21 Oct 2025, 11:56

Type Values Removed Values Added
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/2844e2434385819f674d1fb4130c308c50ba681e - () https://git.kernel.org/stable/c/2844e2434385819f674d1fb4130c308c50ba681e - Patch
References () https://git.kernel.org/stable/c/30ad11bff021a94aff6dab1ec9236fdfd884fbff - () https://git.kernel.org/stable/c/30ad11bff021a94aff6dab1ec9236fdfd884fbff - Patch
References () https://git.kernel.org/stable/c/459080fab12b23c0526026e5cedbf3fabb5457cc - () https://git.kernel.org/stable/c/459080fab12b23c0526026e5cedbf3fabb5457cc - Patch
References () https://git.kernel.org/stable/c/585dc196a08fccdcd1b7fcf473cf566b34c4b840 - () https://git.kernel.org/stable/c/585dc196a08fccdcd1b7fcf473cf566b34c4b840 - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: ethernet: cpsw: fix panic when interrumpe coaleceing is seted via ethtool cpsw_ethtool_begin directamente devuelve el resultado de pm_runtime_get_sync cuando es exitoso. pm_runtime_get_sync devuelve el código de error en caso de fallo y 0 en caso de reanudación exitosa, pero también 1 cuando el dispositivo ya está activo. Por lo tanto, el caso común para cpsw_ethtool_begin es devolver 1. Eso lleva a llamadas inconsistentes a pm_runtime_put en la cadena de llamadas, de modo que pm_runtime_put se llama una vez de más y, como resultado, deja suspendido el cpsw dev. El cpsw dev suspendido lleva a una violación de acceso más adelante por diferentes partes del controlador cpsw. Solucione esto llamando a la función pm_runtime_resume_and_get, que es amigable con los retornos.

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-10-21 11:56

NVD link : CVE-2022-49192

Mitre link : CVE-2022-49192

CVE.ORG link : CVE-2022-49192

JSON object : View

Products Affected

linux

CWE
NVD-CWE-noinfo